| 2025年 | 2026年 | 平年値 | |
| 5-1 | 18.8 | 20.8 | 17.7 |
| 5-2 | 18.9 | 20.7 | 17.9 |
| 5-3 | 18.9 | 20.9 | 17.8 |
| 5-4 | 19 | 21 | 17.9 |
| 5-5 | 18.7 | 20.9 | 18.1 |
| 5-6 | 18.5 | 20.6 | 18.2 |
| 5-7 | 18.2 | 20.6 | 18.3 |
| 5-8 | 18.3 | 20.6 | 18.2 |
| 5-9 | 18.4 | 20.7 | 18.3 |
| 5-10 | 18.3 | 20.7 | 18.3 |
| 5-11 | 18.3 | 20.9 | 18.2 |
| 5-12 | 18.8 | 21 | 18.6 |
| 5-13 | 18.7 | 20.2 | 18.6 |
| 5-14 | 19 | 20.6 | 18.5 |
| 5-15 | 19.2 | --- | 18.7 |